Support for hoist, jack, and wire stretcher



June 12, 1951 F, w OFF|NG 2,556,417

SUPPORT FOR HoIsT, JACK, AND WIRE STRETCHER Filed June 2, 1945 INVENTOR. fk'fpk/cx IK (aff/N4 /77' afm/fm:

Patented `lune 12, 1951 SUPPORT FOR HOIST, .iA-CK, AND WRE STRET-CHER FredrickV W. Cong, Danville, Ill., assigner to Ccfng Hoist Company, Danville, Ill., a corporation Application June 2, 1945, Serial No. 597,165

7 Claims.

This invention relates to a free chain combination hoist, jack and wire stretcher.

This application is a continuation in part of application Serial No. 537,406 now Patent No. 2,377,324, dated June 5, 1945, and copending application Serial No. 568,948, filed December 30, 1944, now Patent No. 2,507,889 dated May 14,

These pending applications disclose a single standard type jack and single line and multiple line hoist, etc., as well as several forms of internal hoist -mechanisms in detail.

The present invention embodies therhoist body, suspending hook, handle, chain, supporting hook, reeving block, etc., all as described and claimed in said applications, wherefore the present disclosure is directed more specifically to the multiple standards, the compound headl and compound foot elements of the multiple capacity jack.

The rate of elevation or Ilowering can be doubled or halved using singlechain or reeving arrangements, also the hoist capacity can be halved or doubled by the same, respectively, all as disclosed in the second application as well as herein. In both applications, however, when the device was used as a jack, the single tubular standard constituted a possible capacity limitation.

The chief object of the present invention is to incorporate herein and retain all the advantages of the copending disclosure structures but to provide multiple load capacity when the device is used as a jack.

The chief feature of the present invention resides in the elements of the multiple capacity standard means and whereby certain of said elements are interchangeable, and some may be used singularly as well.

Other objects and features of the invention `will be set forth more fully hereinafter.

Fig. is a side elevation of the reeving pulleyN and hook used as a single line hook.

(Cl. 24S-357) While the invention herein disclosed is of dual standard type, it is to be understood same could be extendedto triple as well as other multiple types without departing from the scope of this invention. n f

In Figs. 1 and 2 of the drawings, III indicates a hoist suspending hook swiveled in a hoist body I I for binding and hoisting purposes. Within said body Il is main shaft I2 actuatable by handle I3 for load holding, lowering or raising, etc., by means of chain I4 that passes through the hoist as illustrated. This hoist includes manual control I5 and depending apertured extension I 6, all as fully described in said patentV and second application.

When reeving, with dual load capacity and half speed is desired, the hook II, swiveled in pulley block I8, is carried by the sprocket I9 in the chain loop, the end of which has detachable hook 9 associated with link B carried by extension I 6. When single load capacity and normal speed is desired, hook 9 is detached and locks on the reeving block I8 as shown in Fig. 5. All the aforesaid is likewise disclosed and claimed in said second application. l

In the patent the standard is associated with a foot or base and its open upper end nestingly seats extension I 6 for jack use. In the second application the standard is sectionalized.

The present invention includes a compound base or foot lil, a plurality of parallel standards 20 and a compound head 2l. Since the standards are alike a description of one will suice. Herein each standard is divided into an upper portion 22 and a lower'portion 23. The lower end of portion 22 carries extension 2li telescopically seatable in the upper end of lower portion Such extension is pinned at 25 to the upper portion and the portion 23 is apertured at 26 and the extension at 2l to take cotter key or pin 28. When so connected together portions 22 and 23 constitute a rigid unit.

The lower tubular ends of portions 23 are apertured at 2l?. The compound base IQ includes reeniorcing ribbing SII and clcsed end sockets 3| in which are seated the lower end of portions 23. The sockets are apertured at 32 to take cotter keys 33 by which the lower ends or" portions 23 are rigidly connected to said base or foot.

A compound head 2l includes the plate portion 34 notched on its rear face as at 35 for chain I clearance. Depending from the forward edge of the plate Sli is iiange 33, also centrally notched as at 3l for chain clearance.

Depending from the plate 34 and in spaced relation, corresponding to the spacing of sockets 3l are the portions or stems 38. Therebetween is a tubular portion 39, the tubularity registering with aperture 40 in said plate, the tube bore and plate aperture diameter being substantially that of the bore of tube 22. Each stem 33 is transversely apertured as at i and the upper end o each tube 22 is similarly apertured as at 42. A Cotter key t3 secured in the upper end of aperture 42 and stem aperture il secures the stem and standard together.

lt will be apparent that portion l5 can be telescoped into the upper end of eithei` tube 22 or either tube 23 for single standard use at two different elevations provided the compound head be omitted. ln these instances only one standard would be used and the hoist body would bear on the upper end of such standard.

Obviously, tubes 22 are interchangeable one with the other and tubes 23 are similarly interchangeable. Whenever a lower standard height is desired, tubes 22 may be omitted and the compound head 2l will interchangeably fit in and can be similarly secured to the upper ends of tubes 2 3.

It will also be understood that when a single standard (high or low type) is used, the chain lli moves parallel thereto and along same. When two or more standards are used, and a pair is positioned as shown in Figs. l and 2, the chain, etc., rides between the standards. The link 8 and hook 9 are connectible below tube 39 as shown in Fig. 1.

While the invention has been illustrated and described in great detail in the drawings and foregoing description, the saine is to be considered as illustrative and not restrictive in character.

The several modiiications described herein, as well as others which will readily suggest themselves to persons skilled in this art, all are conidered to be vithin the broad scope of the invention, reference being had to the appended claims.

The invention claimed is:

l. A strut support for a hoist body having a lower bearing face and a depending portion for transforming the hoistto a jack, comprising a multiple socketed base, a multiple stemmed head, a plurality of standards socket seatable and stem head engageable, and a tubular socket on the head for depending portion reception, the

body bearing upon the head.

2. A strut support as deilned by claim 1 wherein each standard is identically sectionalized, adjacent sections having interlitting connections and similar sections being interchangeable one with the other.

3. A strut support as defined by claim 1 wherein each standard is identically sectionalized, the upper ends of similar sections being interchangeably associated with said head for standard height variation.

4. A strut support as dened by claim 1 wherein each standard is identically sectionalized, adjacent Sections having intertting connections and similar sections being interchangeable one with the other, the upper ends of similar sections being interchangeably associated with said head for standard height variation.

5. A one piece strut support head including a bearing plate, a plurality of depending spaced stems, and a tubular socket depending from the plate and spaced from said stems, the plate having an aperture therethrough in registration with the socket.

6. A strut support for a hoist body having a lower bearing face and a depending portion for transforming the hoist to a jack, comprsingamultiple .socketed member, a multiple stemmed member, the members being disposable one above the other, one of the members serving as a head and the other as a base, a plurality of standards which are socket seatable and stem engageable at either end, and a tubular socket on the upper member for hoist body depending portion reception, the body bearing upon the upper member.

7. A strut structure as defined by claim 6 wherein the standards are identically sectionalized and tubular, and means are telescopically associated with the adjacent ends of adjacent sections of each standard for unitizing the sections of that standard.

FREDRICK W. COFFING.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 607,867 Marshall July 25, 1898 776,881 Ambrose Dec. 6, 1904 1,030,588 Jones' June 25, 1912 1,227,105 Barnes May 22, 1917 2,063,661 Curran Dec. 8, 1936 2,381,247 Symons Oct. 5, 1943 2,377,324 Coing June 5, 1945 FOREIGN PATENTS Number Country Date 59,628 Switzerland Dec. 2l, 1912 

